Hi! i'm very newbie in Silverstripe, and here i'm again with a question.

Here are my clases so you can see the relationships.

class Partido extends Page {

	static $db = array(
		'Resultado' => 'Varchar',
		'Fecha' => 'date',
		'GolesRojo' => 'int',
		'GolesNegro' => 'int'
	);

	static $has_many = array(
		'Equipos' => 'Equipo',
		'Puntuaciones' => 'Puntuacion

	public function getCMSFields() {
		$fields = parent::getCMSFields();

		$dateField = new DateField('Fecha');
		$dateField->setConfig('showcalendar', true);
		
		$fields->addFieldToTab('Root.Main', $dateField, 'Content');
		$fields->addFieldToTab("Root.Main", new TextField("Resultado"), 'Content');
				
		$config = GridFieldConfig_RecordEditor::create();
		
		$config->getComponentByType('GridFieldDataColumns')->setDisplayFields(array(
				'Color' => 'Color'
		));
		$equipos = new GridField(
				'Equipos', // Field name
				'Equipo', // Field title
				$this->Equipos(), 
				$config
		);
		
		$fields->addFieldToTab('Root.Equipos', $equipos);
		return $fields;
	}

class Equipo extends DataObject {

	static $db = array(
		'Color' => 'Varchar',
	);

	static $many_many = array(
		'Jugadores' => 'Jugador'
	);

	static $has_one = array(
		'Partido' => 'Partido'
	);


	public function getCMSFields() {
	
		$fields = parent::getCMSFields();

		$field = new DropdownField('PartidoID', 'Partido', Partido::get()->map('ID', "CustomTitle"));
		$field->setDisabled(true);
		$field->performDisabledTransformation();
		$fields->push($field);
					
		$config = GridFieldConfig_RelationEditor::create();
		$config->removeComponentsByType('GridFieldAddNewButton');
		$config->getComponentByType('GridFieldAddExistingAutocompleter')->setSearchFields(array('Nombre', 'Apellido'))->setResultsFormat('$Nombre - $Apellido');
		$config->getComponentByType('GridFieldDataColumns')->setDisplayFields(array(
				'Nombre' => 'Nombre',
				'Apellido'=> 'Apellido',
				'Puntuaciones.Puntos' => "Puntos"
		));

		$puntuaciones = new GridField(
				'Jugadores', // Field name
				'Jugador', // Field title
				$this->Jugadores(), // List of all related students
				$config
		);

		$fields->addFieldToTab('Root.Main', $puntuaciones);
		return $fields;
	}
}

class Jugador extends DataObject {
	static $db = array(
		'Nombre' => 'Varchar',
		'Apellido' => 'Varchar'
	);
	
	static $has_many = array(
		'Puntuaciones' => 'Puntuacion',
	);
	
	static $belongs_many_many = array(
		'Equipos' => 'Equipo',
	);
	
	public function getCustomTitle() {
		return $this->Nombre." ".$this->Apellido;
	}
	
	public function getCMSFields() {
		
		$fields = parent::getCMSFields();
		$field = new TextField('PuntosID', 'Puntaje', $this->Puntuaciones.PuntosID);
		$fields->push($field);
		/*$fields->addFieldToTab("Root.Main", new TextField("Nombre"), 'Content');
		$fields->addFieldToTab("Root.Main", new TextField("Apellido"), 'Content');
		$fields->addFieldToTab("Root.Main", new TextField("Puntos"), 'Content');
		return $fields;
		// Name, Description and Website fields
		$config = GridFieldConfig_RelationEditor::create();
		// Set the names and data for our gridfield columns
		$config->getComponentByType('GridFieldDataColumns')->setDisplayFields(array(
				'Puntos' => 'Puntos',
				//'Project.Title'=> 'Project' // Retrieve from a has-one relationship
		));
		
		/*return new FieldList(
				new TextField('Nombre', 'Nombre'),
				new TextField('Apellido', 'Apellido'),
				new DropdownField(
						'Puntuacion',
						'Puntuacion',
						//Puntuacion::get()->map("Puntos", "Puntos")
				)
				//new TextField('Puntuacion.Puntos', 'Puntuacion')
				//new GridField("Puntuacion", "Puntuacion", $this->Puntos(), $config, $this)
		);*/
		$jugador = Jugador::get()->byID($this->ID);
		if($jugador){
			$config = GridFieldConfig_RelationEditor::create();
			
			$config->getComponentByType('GridFieldDataColumns')->setDisplayFields(array(
					'Puntos' => 'Puntos'
			));
			$equipos = new GridField(
					'Puntuaciones', // Field name
					'Puntuacion', // Field title
					$this->Puntuaciones(), // List of all related students
					$config
			);
			
			$fields->addFieldToTab('Root.Main', $equipos);
		}
		return $fields;
	}
	
	/*static $searchable_fields = array(
			'Nombre',
			'Apellido'
			// leaves out the 'Price' field, removing it from the search
	);*/
	
	public function partido(){
		$quipo = Equipo::get()->filter(array("JugadorID" => $this->id));
		Debug::show($equipo);
	}
}

class Puntuacion extends DataObject {
	static $db = array(
		'Puntos' => 'Varchar',
	);
	
	static $has_one = array(
		'Jugador' => 'Jugador',
		'Partido' => 'Partido'
	);
	
	public function getCMSFields() {
		//Debug::show($this);
		$fields = parent::getCMSFields();
		$fields->push(new TextField('Puntos', 'Puntaje'));
				
		$field = new DropdownField('JugadorID', 'Jugador', Jugador::get()->map('ID', "CustomTitle"));
		$field->setDisabled(true);
		$field->performDisabledTransformation();
		$fields->push($field);
			
		$partido = Partido::get()->filter( array("ID" => $this->PartidoID));
		$partido = new TextField("PartidoID", "sarasa", $partido->ID);
		$partido = $partido->setDisabled(true);
		$partido->performDisabledTransformation();
		$fields->push($partido);

		$fields->push($field);
						
		return $fields;
	}
}

In this image the relarionships see better.

to add a "Puntuacion" are the next steps.

1. add a new "Partido".
2. Inside the "partido" whit GridField add a new "Equipo".
3 Inside the "Equipo" whit another Gridfield, link existings "Jugador". so far so good and working.
4. inside the "Jugador" whit another gridfield for "Puntuaciones" try to add a "Puntuacion" but wen the screen of new "Puntuacion" shows, I lost the "Partido" relation.
in other words I dont know to which partido i'm going to record the "Puntuacion", only the "JugadorID" remains, and I have to set manually with a dropdowfiel or something the PartidoID and this is what I dont want.

I hope you understand what the problem is and any help will be grateful.

Bye!

PD: Sorry about my poor english!!!

Hi again,
If I understand correctly a Puntuacion can belong to multiple Partido? And a Partido can belong to multiple Puntuacion?
You might be after a many_many/belongs_many_many relationship
Remove the has_one/has_many and try adding these.

class Partido extends Page {
     static $many_many = array(
           'Puntuaciones' => 'Puntuacion
     );
}

class Puntuacion extends DataObject { 
     static $belongs_many_many = array(
           'Partidos' => 'Partido'
     );
}

Hi Bambii7 thank´s for your reply.

No, a "Puntuacion"(score) belongs to one especific "Jugador"(player) and "Paritdo"(Match) together. so a "Jugador" can have one "Puntuacion" for each "Partido" that he plays.

as show the image of the tables, the table Puntuacion has PartidoID and JugadorID.

To add "Puntuacion" I use Gridfields
here the code:

class Jugador extends DataObject {
......
......
public function getCMSFields() {
		$fields = parent::getCMSFields();
		$jugador = Jugador::get()->byID($this->ID);
		if($jugador){// Player exists
			$config = GridFieldConfig_RelationEditor::create();
			
			$config->getComponentByType('GridFieldDataColumns')->setDisplayFields(array(
					'Puntos' => 'Puntos'
			));
			$puntos= new GridField(
					'Puntuaciones', 
					'Puntuacion', 
					$this->Puntuaciones(), 
					$config
			);
			
			$fields->addFieldToTab('Root.Main', $puntos);
		}
		return $fields;
	}

My problems resides specificly when i want to add a Puntuacion, because the gridfield seems only to manage the relationship between the "Jugador" and the new "Puntuacion", but the Jugador already has a relationships with a Equipo to which it belongs, and that Equipo belongs to a "Partido". and to add a puntuacion I need the PartidoID too.

So in class Puntuacion y don`t know how to have access to that PartidoID when I'm adding a new Puntuacion.

The solution I found is by adding a dropdownField that shows all the Partidos, and I have to manually select the correct Partido.
but I want to know if exist a way to do it automaticly.

here the partial solution y found:

class Puntuacion extends DataObject { 
   static $db = array( 
      'Puntos' => 'Varchar', 
   ); 
    
   static $has_one = array( 
      'Jugador' => 'Jugador', 
      'Partido' => 'Partido' 
   ); 
    
   public function getCMSFields() { 
      $fields = parent::getCMSFields(); 
      $fields->push(new TextField('Puntos', 'Puntaje')); // the db field
             
      $field = new DropdownField('JugadorID', 'Jugador', Jugador::get()->map('ID', "CustomTitle")); //recognized by the relarion in the gridfield, I disabled this for prevent people change the player.
      $field->setDisabled(true); 
      $field->performDisabledTransformation(); 
      $fields->push($field); 
          
      $fields->push( new DropdownField('PartidoID', 'Partido', Partido::get()->map('ID', "CustomTitle")));// Partial solution, selec the Partido manually.
                   
      return $fields; 
   } 
}

I hope you understand a little better.
Thanks for your time!

Edit:
add this image, i thinks explains better what i am talking about.

Solved

I get the ID of the partido from the breadcrum and insert to the form corresponding to the Partido.

class Puntuacion extends DataObject {
	static $db = array(
		'Puntos' => 'Varchar',
	);
	
	static $has_one = array(
		'Jugador' => 'Jugador',
		'Partido' => 'Partido'
	);
	
	public function getCMSFields() {
		//Debug::show();
		
		$fields = parent::getCMSFields();
		$fields->push(new TextField('Puntos', 'Puntaje'));
		$field = new DropdownField('JugadorID', 'Jugador', Jugador::get()->map('ID', "CustomTitle"));
		
		$controller = Controller::curr();
		$breadcrum = $controller->breadcrumbs();

		$partido = $breadcrum ->last();
		$idPartido = end(explode("/",$partido->Link));
		$partido = Partido::get()->byId($idPartido);

	
		$field->setDisabled(true);
		$field->performDisabledTransformation();
		$fields->push($field);
	
		$field = new TextField("PartidoID", "Partido", $partido->ID);
		$fields->push($field);
		$fields->push($field);
	
		return $fields;
		
	}
}